“Wimbledon” is perfectly at home displayed on Hulu. It works especially well because its scale is right. Brad Winderbaum, the online auteur behind “Satacracy 88” and other tiny-screen serials, once explained online scale to me. In Hollywood movies, faces are meant to be larger than life. On TV, the face of the performer should approximate in size the face of a viewer on her couch. In online video, Winderbaum says, details of the human body, seen at closer range, are ideal. The human eye is the defining shot: think of that little YouTube screen with an eye in it, at actual size.